Optical module

Abstract

The utility model provides an optical module, which relates to the technical field of optical communication, and comprises a shell, a substrate, an MT insertion core, a sealing cover plate and an optical device, the MT insertion core is arranged on the substrate, two opposite sides along the X direction are respectively provided with an inner optical fiber interface and an outer optical fiber interface, and the sealing cover plate comprises a top plate and a side plate. A sealed cavity is defined by the top plate, the side plates and the base plate. A receding opening is defined by the side plate and the top plate on one side, the MT insertion core is contained in the receding opening, and the top plate and the side plate are both attached to the peripheral wall of the MT insertion core in a sealed mode. Compared with the prior art, the sealing cover plate has the advantages that the inner side of the MT insertion core and the optical device can be sealed together, so that the optical fiber between the MT insertion core and the optical device is completely positioned in the sealing cavity, and the sealing effect of the sealing cover plate is greatly improved.

Description

Technical Field

[0001] The utility model relates to the technical field of optical communications, and in particular to an optical module. Background Art

[0002] The inventors have found that in recent years, the density and power consumption of optical modules have increased rapidly. Heat dissipation is one of the difficult problems affecting the performance of optical modules. Traditional solutions use airtight metal boxes to seal optical devices, which has problems such as high cost, high process difficulty, and difficult design.

[0003] Furthermore, in conventional technologies, the MT (Multi-Fiber Termination) module and the optical device are separately arranged, and the optical device is sealed with an airtight cover. However, the MT module and the optical device are connected by an optical fiber, and the sealing between the optical fiber and the airtight cover is difficult to achieve, thereby affecting the sealing effect of the airtight cover and resulting in poor sealing. Utility Model Content

[0004] The purpose of the utility model is to provide an optical module, which can seal the MT and the optical device together, so that the optical fibers of the MT and the optical device are located within the sealed cavity, thereby greatly improving the sealing effect.

[0005] The embodiment of the present utility model is achieved as follows:

[0006] In a first aspect, the present invention provides a liquid cooling module sealing structure, comprising:

[0007] shell;

[0008] a substrate, the substrate being disposed in the housing;

[0009] An MT ferrule, the MT ferrule being disposed on the substrate and sealed therewith, the MT ferrule being provided with an inner fiber interface and an outer fiber interface on two opposite sides along the X direction;

[0010] A sealing cover plate, the sealing cover plate comprising a top plate and side plates connected together, the side plates being arranged around an edge of the top plate, the side plates being sealed to the base plate, and the top plate, the side plates and the base plate forming a sealed cavity for accommodating an optical device;

[0011] an optical device, the optical device being disposed in the sealed cavity and optically connected to the MT ferrule;

[0012] One end of the sealing cover plate is provided with a clearance opening connected to the sealed cavity, the MT ferrule is accommodated in the clearance opening, and the inner optical fiber interface is accommodated in the sealed cavity, the outer optical fiber interface is located outside the sealed cavity, and the top plate and the side plate are both sealedly connected to the outer peripheral wall of the MT ferrule so that the MT ferrule blocks the clearance opening.

[0013] In an optional embodiment, a sealant layer for sealing the sealed cavity is provided between the base plate and the side plate, between the MT ferrule and the side plate, and between the MT ferrule and the top plate.

[0014] In an optional embodiment, the MT ferrule includes an inner core portion and an outer core portion that are integrally arranged, the inner core portion is accommodated in the sealed cavity, the inner optical fiber interface is arranged on a side of the inner core portion away from the outer core portion, the outer core portion at least partially extends out of the clearance opening, and the outer optical fiber interface is arranged at an end of the outer core portion away from the inner core portion.

[0015] In an optional embodiment, the width of the inner core portion is greater than the width of the outer core portion, and a positioning groove is provided on the substrate, and the inner core portion is assembled in the positioning groove.

[0016] In an optional embodiment, the optical module further includes an external connector having an external connection port, the external connector being attached to an end of the external core portion away from the internal core portion, and the external connection port correspondingly engaging with the external optical fiber interface.

[0017] In an optional embodiment, an adhesive layer is provided between the outer connector and the outer core portion.

[0018] In an optional embodiment, a clamping claw is further provided at one end of the sealing cover plate adjacent to the clearance opening, and the clamping claw clamps the external connector to keep the external connector and the external core portion fixed.

[0019] In an optional embodiment, the clamping claw includes an elastic connecting portion and an elastic hook portion, the elastic connecting portion is integrally provided at the end of the sealing cover plate, and the elastic hook portion is connected to the elastic connecting portion and elastically abuts against the surface of the external connector.

[0020] In an optional embodiment, the end face of the MT ferrule provided with the external optical fiber interface is also provided with a guide pin hole passing through the MT ferrule, a guide pin is provided in the guide pin hole, the guide pin is protruded from the end face of the MT ferrule, and the guide pin is sealed and connected to the inner wall of the guide pin hole.

[0021] In an optional embodiment, a glue overflow area is provided around the area where the base plate is connected to the side plate.

[0022] The beneficial effects of the embodiments of the present utility model include:

[0023] An embodiment of the present invention provides an optical module, in which the MT ferrule of the optical module is arranged on a substrate, and an inner fiber interface and an outer fiber interface are provided on opposite sides of the MT ferrule. A sealing cover is sealed and fitted on the substrate, and is formed with the substrate to form a sealed cavity for accommodating optical devices. Particularly, a clearance opening is provided at one end of the sealing cover, the MT ferrule is accommodated in the clearance opening, and the inner fiber interface is accommodated in the sealed cavity. The outer fiber interface is exposed to the sealing cover, and the sealing cover is sealed and fitted with the outer peripheral wall of the MT ferrule. Compared with the prior art, the present invention forms a sealed cavity by enclosing the sealing cover and the substrate, thereby being able to accommodate optical devices. At the same time, a clearance opening is provided at the end of the sealing cover, so that the MT ferrule can be accommodated in the clearance opening, and its inner fiber interface is connected inwardly to the optical device, and the outer fiber interface is exposed to the sealing cover, thereby realizing internal and external communication connections. The sealing cover is sealed against both the substrate and the outer wall of the MT ferrule, thereby sealing the inner side of the MT ferrule and the optical device. This allows the optical fiber between the MT ferrule and the optical device to be completely located within the sealed cavity. This avoids the conventional technique of sealing at the optical fiber and greatly improves the sealing effect of the sealing cover. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following is a brief introduction to the drawings required for use in the embodiments. It should be understood that the following drawings only illustrate certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying any creative work.

[0025] Figure 1 A schematic diagram of the internal structure of the optical module provided by an embodiment of the present invention is exploded from a first viewing angle;

[0026] Figure 2 A schematic diagram of the assembly structure of the internal structure of the optical module provided by an embodiment of the present utility model at a first viewing angle;

[0027] Figure 3 A cross-sectional view of the assembly structure of the internal structure of the optical module provided by an embodiment of the present utility model at a second viewing angle;

[0028] Figure 4 A schematic diagram of the internal structure of the optical module provided by an embodiment of the present invention is exploded from a second viewing angle;

[0029] Figure 5for Figure 1 Schematic diagram of the assembly structure of the MT ferrule and the substrate;

[0030] Figure 6 A schematic diagram of the assembly structure of the internal structure of the optical module provided by an embodiment of the present utility model from a third viewing angle;

[0031] Figure 7 for Figure 1 Schematic diagram of the connection structure between the middle MT ferrule and the outer connector;

[0032] Figure 8 This is a schematic diagram of the structure of the optical module provided in an embodiment of the present utility model.

[0033] icon:

[0034] 100-optical module; 110-base plate; 111-positioning groove; 130-MT ferrule; 131-inner fiber interface; 133-external fiber interface; 135-inner ferrule portion; 137-external ferrule portion; 138-guide pin hole; 139-guide pin; 150-sealing cover plate; 151-sealing cavity; 152-top plate; 153-allowance opening; 154-side plate; 155-sealing adhesive layer; 170-external connector; 171-docking jack; 190-holding claw; 191-elastic connecting portion; 193-elastic hook portion; 200-housing; 300-optical device. DETAILED DESCRIPTION

[0035] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings herein can be arranged and designed in various different configurations.

[0036] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, it does not need to be further defined or explained in subsequent drawings.

[0037] It should also be noted that, in the description of this utility model, unless otherwise expressly specified or limited, the terms "disposed," "installed," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections, electrical connections; direct connections, indirect connections through an intermediate medium, and internal connections between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on the specific circumstances.

[0038] As disclosed in the background, prior art uses sealing caps to seal optical devices. Conventional MT modules typically include MT ferrules, which enable high-density fiber connections. However, the MT ferrules are typically positioned outside the sealing cap, while the optical device requires a wired connection to the MT ferrules. Therefore, the sealing cap must be pressed onto the optical fiber between the MT ferrule and the optical device. Because the optical fiber and the sealing cap are in line-to-surface contact, achieving a seal is difficult, making it difficult to guarantee the sealing effectiveness of the sealing cap and prone to seal failure over time.

[0039] In order to solve the above problems, the embodiments of the present invention provide a novel liquid cooling module sealing structure and an optical module. The specific structures of the liquid cooling module sealing structure and the optical module are described in detail below. Specific embodiments

[0041] Please refer to Figures 1 to 4 as well as Figure 8 The embodiment of the present invention provides an optical module 100, which can seal the connection part of the MT ferrule 130 and the optical device 300 together, so that the optical fiber between the MT ferrule 130 and the optical device 300 is located within the sealed cavity, greatly improving the sealing effect.

[0042] The optical module 100 provided in an embodiment of the present invention includes a housing 200, an optical device 300, a substrate 110, an MT ferrule 130, and a sealing cover plate 150. The substrate 110 is disposed in the housing 200. The MT ferrule 130 is disposed on the substrate 110 and is sealedly connected to the substrate 110. The MT ferrule 130 is provided with an inner fiber interface 131 and an outer fiber interface 133 on two opposite sides along the X direction. The sealing cover plate 150 includes a top plate 152 and a side plate 154 connected together. The side plate 154 is disposed around the edge of the top plate 152. The side plate 154 is sealedly connected to the substrate. The top plate 152, the side plate 154, and the substrate 110 are surrounded to form a sealed cavity 151 for accommodating the optical device 300. The optical device 300 is disposed in the sealed cavity 151 and is optically connected to the MT ferrule 130. One end of the sealing cover plate 150 is provided with a clearance opening 153, into which the MT ferrule 130 is accommodated. The inner fiber interface 131 is housed within the sealed cavity 151, while the outer fiber interface 133 is located outside the sealed cavity 151. The top plate 152 and side plates 154 are both sealed against the outer walls of the MT ferrule 130, ensuring that the MT ferrule 130 blocks the clearance opening 153.

[0043] It should be noted that the bottom edge of the side panel 154 is sealed and fitted with the surface of the substrate 110. At the same time, the side panel 154 can be arranged around the edges of three sides of the top panel 152, and a clearance opening 153 can be formed on the other side. The top panel 152 and the side panel 154 are tightly fitted with the outer peripheral surface of the MT ferrule 130 and sealed, thereby isolating the sealed cavity 151 from the outside. Since the side panel 154 and the substrate 110, the side panel 154 and the outer peripheral surface of the MT ferrule 130, and the top panel 152 and the outer peripheral surface of the MT ferrule 130 are all face-to-face fitted, the sealing structure is easier to achieve. Specifically, the present invention forms a sealed cavity 151 by enclosing the sealing cover plate 150 and the substrate 110, so that the optical device 300 can be accommodated therein. At the same time, the MT ferrule 130 can be accommodated in the clearance opening 153, with its inner fiber interface 131 facing inward to connect with the optical device 300, and the outer fiber interface 133 exposed to the sealing cover 150, thus achieving internal and external communication connection. The sealing cover 150 is simultaneously sealed against the surface of the substrate 110 and the outer peripheral wall of the MT ferrule 130, thereby sealing the inner side of the MT ferrule 130 and the optical device 300 within the sealed cavity 151. This ensures that the optical fiber between the MT ferrule 130 and the optical device 300 is completely located within the sealed cavity 151, avoiding the conventional structure of completing the seal at the optical fiber, and greatly improving the sealing effect of the sealing cover 150.

[0044] In some embodiments, a sealant layer 155 is provided between the substrate 110 and the side panels 154, between the MT ferrule 130 and the side panels 154, and between the MT ferrule 130 and the top panel 152 to seal the sealed cavity 151. Specifically, during actual manufacturing, the MT ferrule 130 can first be bonded and fixed to the substrate 110 using a sealant, and optically connected to the optical device 300. Then, a layer of adhesive is applied around the area on the substrate 110 where the optical device 300 is located, and a layer of adhesive is applied to the outer surface of the MT ferrule 130. The sealing cover plate 150 is then installed. The bottom end surfaces of the side panels 154 of the sealing cover plate 150 are connected to the substrate 110 via the sealant layer 155, and the top panel 152 of the sealing cover plate 150 is spaced apart from the substrate 110, thereby forming the sealed cavity 151. At the same time, the top plate 152 and the side plate 154 at the edge of the opening 153 are connected to the outer peripheral surface of the MT ferrule 130 through the sealant layer 155. The sealant layer 155 can ensure the sealing property of the sealed cavity 151 and improve the sealing effect.

[0045] It should be noted that the sealing cover plate 150 can be made of metal or sheet metal, or plastic or a composite material. In other preferred embodiments of the present invention, the sealing connection between the sealing cover plate 150 and the substrate 110, and between the sealing cover plate 150 and the MT ferrule 130, can also be achieved by other means, such as welding or sintering, which are not specifically limited here.

[0046] In some embodiments, a glue overflow area is further provided around the area where the substrate 110 and the side panel 154 are connected. The glue overflow area is used to prevent the sealant from overflowing into the mounting area where the electronic components are located.

[0047] See also Figure 5 In some embodiments, the MT ferrule 130 includes an integrally formed inner ferrule portion 135 and an outer ferrule portion 137. The inner ferrule portion 135 is housed in a sealed cavity 151, and the inner fiber interface 131 is disposed on a side of the inner ferrule portion 135 away from the outer ferrule portion 137. The outer ferrule portion 137 at least partially extends out of a clearance opening 153, and the outer fiber interface 133 is disposed on an end of the outer ferrule portion 137 away from the inner ferrule portion 135. Specifically, during actual installation, the inner ferrule portion 135 is installed toward the optical device 300 and utilizes the inner fiber interface 131 to achieve connection with the optical device 300. The outer ferrule portion 137 extends out of the clearance opening 153 to achieve external connection.

[0048] In some embodiments, the width of the inner core portion 135 is greater than the width of the outer core portion 137. A positioning groove 111 is provided on the substrate 110, and the inner core portion 135 is assembled in the positioning groove 111. And the outer core portion 137 is fixed to the surface of the substrate 110 by bonding with a sealant. Specifically, the width of the inner core portion 135 mentioned in this embodiment is greater than the width of the outer core portion 137, which means that the dimensions of the inner core portion 135 along the Y direction and the Z direction are greater than the dimensions of the outer core portion 137 along the Y direction and the Z direction. Therefore, in the direction perpendicular to the plane where the substrate 110 is located, the inner core portion 135 will protrude to the upper and lower sides relative to the outer core portion 137. Due to the provision of the positioning groove 111, the positioning of the inner core portion 135 can be achieved. The inner core portion 135 can be accommodated in the positioning groove 111, so that the inner core portion 135 can sink, and the outer core portion 137 can be attached to the surface of the substrate 110. Here, the outer core portion 137 can be attached to the surface of the substrate 110 through the sealant to improve the sealing effect of the sealed cavity 151.

[0049] See Figure 2 and Figure 6Furthermore, the optical module 100 also includes an external connector 170. The external connector 170 is provided with an external connection port. The external connector 170 is attached to the end of the external ferrule 137 away from the internal ferrule 135. The external connection port corresponds to the external fiber interface 133. Specifically, the external connector 170 is connected to the MT ferrule 130, and the external connection port and the external fiber interface 133 are mutually engaged to achieve a fiber connection.

[0050] In some embodiments, an adhesive layer is provided between the outer connector 170 and the outer ferrule 137. Specifically, the end face of the outer connector 170 can be in surface-to-surface contact with the end face of the outer ferrule 137. By providing the adhesive layer, a sealed connection between the outer connector 170 and the outer ferrule 137 can be achieved, thereby ensuring a sealed and fixed connection.

[0051] In some embodiments, a clamping claw 190 is further provided on one end of the sealing cover plate 150 adjacent to the clearance opening 153. The clamping claw 190 is provided on both sides of the clearance opening 153 and clamps onto the external connector 170 to secure the external connector 170 to the external ferrule 137. Specifically, the clamping claw 190 can clamp onto the end face of the external connector 170 away from the external ferrule 137 and insert the external connector 170 into the external ferrule 137 to ensure a secure connection.

[0052] Furthermore, the clamping claw 190 includes an elastic connecting portion 191 and an elastic hook portion 193. The elastic connecting portion 191 is integrally provided at the end of the sealing cover plate 150 and is spaced apart from the clearance opening 153. The elastic hook portion 193 is connected to the elastic connecting portion 191 and elastically abuts against the surface of the external connector 170. Specifically, the elastic connecting portion 191 and the elastic hook portion 193 are integrally provided. And the elastic connecting portion 191 is in the form of a sheet and is provided on both sides of the end of the sealing cover plate 150. The elastic hook portion 193 is bent inward and is used to abut against the surface of the external connector 170, and can provide an elastic force toward the external core portion 137 to the external plug sleeve to ensure the clamping and fixing effect.

[0053] It should be noted that in this embodiment, the distance between the two elastic hooks 193 is less than the width of the external connector 170. During actual insertion, the external connector 170 can be inserted between the two elastic hooks 193. The two elastic hooks 193 and the elastic connecting portion 191 deform toward the sides, facilitating smooth insertion of the external connector 170. After insertion, the two elastic hooks 193 return to rest against the external connector 170.

[0054] See also Figure 7In some embodiments, the end face of the MT ferrule 130 provided with the external optical fiber interface 133 is also provided with a guide pin hole 138. There are two guide pin holes 138, and the two guide pin holes 138 are respectively located on both sides of the external optical fiber interface 133. A guide pin 139 is provided in each guide pin hole 138. The guide pin 139 is passed through the MT ferrule 130 and protrudes from the two end faces of the MT ferrule 130 along the X direction, and is used to achieve alignment, plugging and fixing with the external connector 170 to ensure the accuracy of the optical fiber. The guide pin 139 is sealed to the inner wall of the guide pin hole 138. Specifically, the sealed connection between the guide pin 139 and the inner wall of the guide pin hole 138 can be achieved by filling the guide pin hole 138 with sealing glue. In addition, the end face of the external connector 170 is also provided with a docking socket 171. The guide pin 139 can be correspondingly plugged into the docking socket 171 to complete the fixed plugging between the MT ferrule 130 and the external connector 170.

[0055] In summary, an embodiment of the present invention provides an optical module 100. An MT ferrule 130 is disposed on a substrate 110, and an inner fiber interface 131 and an outer fiber interface 133 are disposed on opposite sides of the MT ferrule 130. The sealing cover 150 is sealed against the substrate 110 and encloses a sealed cavity 151 with the substrate 110 to accommodate the optical device 300. A clearance opening 153 is provided at one end of the sealing cover 150, and the MT ferrule 130 is accommodated in the clearance opening 153. The inner fiber interface 131 is accommodated in the sealed cavity 151, and the outer fiber interface 133 is exposed to the sealing cover 150, and the sealing cover 150 is sealed against the outer peripheral wall of the MT ferrule 130. Compared with the prior art, the present invention forms a sealed cavity 151 by enclosing the sealing cover 150 and the substrate 110, so that the optical device 300 can be accommodated therein. At the same time, a clearance opening 153 is provided at the end of the sealing cover plate 150, so that the MT ferrule 130 can be accommodated in the clearance opening 153, and its internal fiber interface 131 is connected inwardly to the optical device 300. The external fiber interface 133 is exposed to the sealing cover plate 150, realizing internal and external communication connection. The sealing cover plate 150 is sealed against the outer peripheral wall of the substrate 110 and the MT ferrule 130 at the same time, thereby sealing the inner side of the MT ferrule 130 and the optical device 300 together, so that the optical fiber between the MT ferrule 130 and the optical device 300 is completely located within the sealed cavity 151, avoiding the structure of completing the sealing at the optical fiber in conventional technology, and greatly improving the sealing effect of the sealing cover plate 150. At the same time, the positioning groove 111 is dug on the substrate 110 to achieve clearance for the MT ferrule 130, and also ensures the sealing effect between the MT ferrule 130 and the substrate 110. Furthermore, the outer connector 170 and the outer core portion 137 are plugged into each other and fixed by means of the clamping claws 190 , thereby ensuring a plug-in fixing effect.

[0056] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art will readily appreciate that the present invention is susceptible to various modifications and variations. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. An optical module, characterized in that: include: shell; a substrate, the substrate being disposed in the housing; An MT ferrule, the MT ferrule being disposed on the substrate and sealed therewith, the MT ferrule being provided with an inner fiber interface and an outer fiber interface on two opposite sides along the X direction; A sealing cover plate, the sealing cover plate comprising a top plate and side plates connected together, the side plates being arranged around an edge of the top plate, the side plates being sealed to the base plate, and the top plate, the side plates and the base plate forming a sealed cavity for accommodating an optical device; an optical device, the optical device being disposed in the sealed cavity and optically connected to the MT ferrule; One end of the sealing cover plate is provided with a clearance opening connected to the sealed cavity, the MT ferrule is accommodated in the clearance opening, and the inner optical fiber interface is accommodated in the sealed cavity, the outer optical fiber interface is located outside the sealed cavity, and the top plate and the side plate are both sealedly connected to the outer peripheral wall of the MT ferrule so that the MT ferrule blocks the clearance opening.

2. The optical module according to claim 1, wherein A sealing glue layer for sealing the sealing cavity is provided between the substrate and the side plate, between the MT ferrule and the side plate, and between the MT ferrule and the top plate.

3. The optical module according to claim 1, wherein: The MT ferrule includes an inner core portion and an outer core portion that are integrally arranged. The inner core portion is accommodated in the sealed cavity. The inner optical fiber interface is arranged on a side of the inner core portion away from the outer core portion. The outer core portion at least partially extends out of the clearance opening. The outer optical fiber interface is arranged at an end of the outer core portion away from the inner core portion.

4. The optical module according to claim 3, wherein: The width of the inner core portion is greater than that of the outer core portion. A positioning groove is provided on the substrate, and the inner core portion is assembled in the positioning groove.

5. The optical module according to claim 3, wherein: The optical module further includes an external connector provided with an external connection port. The external connector is attached to an end of the external plug-in core away from the internal plug-in core, and the external connection port is correspondingly engaged with the external optical fiber interface.

6. The optical module according to claim 5, characterized in that An adhesive layer is provided between the outer connector and the outer core portion.

7. The optical module according to claim 5, wherein: The sealing cover plate is further provided with a clamping claw at one end adjacent to the clearance opening, and the clamping claw clamps the external connector so as to keep the external connector and the external plug-in core portion fixed.

8. The optical module according to claim 7, wherein: The clamping claw includes an elastic connecting portion and an elastic hook portion. The elastic connecting portion is integrally provided at the end of the sealing cover plate. The elastic hook portion is connected to the elastic connecting portion and elastically abuts against the surface of the external connector.

9. The optical module according to claim 1, wherein: The end face of the MT ferrule provided with the external optical fiber interface is also provided with a guide pin hole passing through the MT ferrule, a guide pin is provided in the guide pin hole, the guide pin is protruded from the end face of the MT ferrule, and the guide pin is sealed and connected to the inner wall of the guide pin hole.

10. The optical module according to claim 1, wherein: A glue overflow area is provided around the area where the base plate is connected to the side plate.

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